Petzl Nao

The Petzl Nao is a great headtorch for serious off road running so is the upgraded Nao+ with 750 lumens even better?

I’ve had the second generation Petzl Nao headtorch (the 575 lumen version) for a couple of years and have had chance to get the most out of it on long overnight runs. I used it on the Charlie Ramsay Round and the High Peak Marathon where long battery life was vital and the reactive lighting setting was really useful when using a map and compass. I’ve been fairly impressed with it so wondered if the updated Nao+ is even better.

Petzl Nao+ head torch, distinguishable by its red trim

What’s new?

Looking at the Nao alongside the updated Nao+ the most obvious difference is the colour scheme with the Nao+ having a red, black and white head unit as opposed to the old light grey and white. Also the battery compartment is changed to red and black from the old grey.

Red and Black on the Nao+ battery pack

Shape and size are still the same but there is a change to the attachment system with the non elastic black cord being replaced by elasticated red bungee type cord. I feel this gives a slightly better fit and is more comfortable. Other than that the versions appear the same.

elasticated bungee replaces static cord on the head strap

Cosmetics aside it’s the performance and operating system where the main differences lie. The Nao+ has the same Reactive Technology which senses the ambient and reflected light and brightens and dims the torch accordingly. Some people don’t like this but if I find that it is very useful if doing a lot of navigating, especially with a plasticated or laminated map as it significantly reduces the glare. Yes the Reactive function is affected by fog and even condensation from your breath on a cold night, but one twist of the large button switches to constant mode. Although still powered by Petzl’s own 3.7 V 2,600 mHa USB rechargeable Li-ion battery, output has increased from 575 to 750 lumens (actually I found the existing power to be perfectly adequate, even in the Mamores in the wee small hours). What is more useful is the increased battery life which now gives a claimed 12 hours in Reactive mode at 305 lumens. Whilst I’m generally sceptical of manufacturer’s claimed performances I can say from experience that it does have great battery life. I used the Nao+ on the Bob Graham Round using the low (305 lumen) Reactive setting and after 6 hours use the LED indicators still showed 2 bars (3 bars being fully charged). My old Nao only just got me through the night during the High Peak Marathon as it dimmed to reserve mode just as dawn was breaking, the Nao+ is able to last all night.

One new feature on the Nao+ is the addition of a rear red LED. This is very useful if leading a group or running along a dark lane with your back to traffic but it’s not a feature I want for racing as I don’t want people following me! So you would think “easy, just turn it off” but therein lies a problem; you need to use Petzl’s Bluetooth app to do so. Yes, if you want to turn the red light on or off mid run you have to fish out your smartphone, turn on Bluetooth, open the MyPetzl Light app and then change the settings. Oh and it’s probably raining and you’re wearing thick gloves. Great technology or a bit of a faff? You decide!

new for the Nao+ a rear red LED

The big difference

Which leads to the main difference between the latest version of the Petzl Nao and the previous incarnations. Now, to change any of the preset modes on the torch you need to use the “MyPetzl Light” Bluetooth app. Petzl market this feature saying that this makes it easy to change the settings in remote locations, so for example if you haven’t been able to recharge the battery you can reduce the brightness and thus prolong battery life using your phone. Hmm, not sure if I buy that! To me it’s just another app to bloat my phone and for some people who don’t bother to update their phones the app might not even be compatible!

Petzl’s Bluetooth app – great idea or a gimmick?

On the earlier Nao models you changed and customised the settings by plugging the torch into a computer and using the Petzl OS software, but the software doesn’t work with the Nao+ so you’re forced to use the Bluetooth app or stick with the factory settings (the latter have worked fine for me). Another annoyance is that the battery from my Nao isn’t compatible with the Nao+; so if you did want to do an event where a spare battery was needed you’d have to fork out for a spare (around £50) as the new version doesn’t allow for the use of AAA batteries as an emergency backup either.

Petzl website shows earlier batteries aren’t compatible

Petzl claim that the batteries aren’t interchangeable even though the connections look identical so I had a try at swapping them around.

identical connections?

Oddly the Nao+ battery pack does fit onto the older Nao and the torch works, but annoyingly not the other way round. The connector doesn’t accept the battery and I’m reluctant to force it and damage something.

the new battery works on the old torch but not vice versa!

I’d hoped that the Nao+ would have a strobe mode – it does but it can only be switched on via a paired smartphone (you can programme a Morse Code signal using the Bluetooth app). Not ideal if you’ve fallen and broken your ankle or become so hypothermic that you needed to signal for help! So whilst almost all cheap head torches can simply be switched to give an emergency signal the one torch that I am most likely to take with me to remote locations and runs where the consequences of injury are serious can’t!

Good Points

Just like the previous version of the torch the Nao+ gives a great spread of light and now has even longer battery life. The big switch is easy to operate even with bulky gloves. Reactive lighting means that you don’t get dazzled when looking at a map and it preserves battery life. If you don’t like the feature then one twist switches it off. The new bungee cord on makes it slightly more comfortable than the previous version.

Things to improve

The Bluetooth app isn’t for everyone! No problem if settings could be customised using Bluetooth as well as the existing OS system, but not instead of. Compatibility with the existing Nao battery packs would be a welcome feature (particularly for anyone upgrading from the Nao 575 lumen torch). The need to use a smartphone app just to turn the rear LED on and off is just too much hassle. An easily accessible emergency / strobe function as available on budget head torches should be a standard feature.

RRP £140

Verdict

The new Petzl Nao+ retains the great features of its predecessor and adds even more brightness and battery life. It is certainly my first choice torch for long overnight runs involving navigation. However it is over complicated by reliance on a smartphone to change some of its basic settings. Sometimes simplicity rather than complexity is a selling point.

The High Peak Marathon is a 42 mile fell race done in teams of four, overnight, in winter and covers some of the boggiest, pathless and most remote parts of the Peak District. In addition to the usual personal kit required for a long, winter fell race there is a certain amount of mandatory kit that must be carried by each team.

Deciding on the what items of kit to use can take almost as long as running the race itself.. “10 litre pack or squeeze it in to the 5? Two thin base layers or a thick one? Start in a windproof or waterproof? Thick leggings or thin? and will I really need all that food?”

This is what I wore, carried and ate on this year’s event with some reflections on whether it was the right choice or not.

all the gear…. (photo Jen Scotney)

Pack

My pack was always going to be a Montane but I couldn’t decide between the old style Jaws 10 litre with rigid bottles or the new Via series Fang 5 litre with soft flasks. After much packing, unpacking and repacking I opted for the Fang. With more pockets than the old Jaws the Fang actually takes almost as much kit despite its smaller size. It was important that I had easy access to certain things whilst on the run and it was this that finally swayed my choice.

My compass needed to be close to hand so went in the top front mesh pocket with its lanyard attached to the pack so that I wouldn’t lose or break it in the inevitable event of a trip or tumble. It was easy to reach when needed and also importantly easy to put away again when not required rather than constantly running with it in my hand. Maps likewise needed to be close to hand but not needed until the Bleaklow section. These easily fitted into the lower front zipped pocket. The lower front mesh pocket held a 500ml soft flask with a straw which allowed me to drink on the move rather than have to take out the flask and faff around trying to put it back in the pocket. Also in this pocket was a small ziplock bag with 2 electrolyte tablets for refills at the two food stations. The smaller, top front zipped pocket had three gels. One side mesh pocket held my Shot Bloks whilst the other had my GoreTex overmitts in and I used to stash my gloves when my hands got too hot and at the food stations.

The main rear compartment contained kit that I was less likely to need i.e. my waterproof trousers, group shelter and emergency primaloft smock whilst the smaller rear zipped pocket held my personal survival bag.

Montane Fang and what went in to it

Waterproofs

It had been raining for most of the day and was still doing so an hour before we started. It was also forecast for more rain overnight so even though it was dry at the start I set off wearing my waterproof jacket, the OMM Kamleika Smock. I do have lighter, more compact waterproof jackets such as the Montane Minimus and Alpkit Gravitas but I feel the Kamleika is a little bit more robust and likely to withstand being worn underneath a pack. I also carried Kamleika waterproof trousers which weren’t needed.

Clothes

I chose a thin merino wool short sleeved tee shirt under a thicker, long sleeved merino wool cycling top. I specifically chose the top for its rear pockets in which I carried some food and also the zip which would allow me to cool off if it got too warm. My leggings were a cheap pair of medium thickness tights. I have thicker and thinner pairs but these seemed just right. I wore a buff around my neck – really versatile to pull up over your face if the weather gets nasty and a windproof beanie as a hat. In my pack I carried an OMM Rotor Smock Primaloft top as an extra, emergency layer. This was compressed down and carried in a dry bag and wasn’t used.

cycling top with rear pockets for food

Socks

I chose knee length compression socks which offer great protection against the cold, and to some extent against the knee deep immersion into the peat bogs that was to come. Over these I wore 3mm neoprene socks made by Rooster Sailing. I have recently converted to these from Sealskinz.

Shoes

Extreme grip over such boggy terrain was essential so the first thought was to wear Inov-8 Mudclaws. However I’ve also got a pair of Inov-8 X-Claw 275s which offer almost the same grip as the Mudclaw but have a bit more room and a bit more cushioning. This made them the ideal choice to accommodate the 3mm neoprene socks and the long sections of flag stones.

Inov-8 X-Claw 275 for a mix of grip and cushioning

Gloves

I wore a pair of Rooster Sailing liner gloves and carried a pair of Tuff Bags Goretex mitts.

Rooster Sailing liner gloves

Torch

My main torch was a Petzl Nao, programmed to give 8 hours light on reactive mode. I also carried a second torch, a LED Lenser SEO 7R worn around my waist (I’m thin!) I do this in foggy conditions as it illuminates the ground much better than a head torch as the light source is closer to the ground and you don’t get the bounce back effect off the fog. It saves carrying a hand torch, leaving your hands free to do important things like hold the map and compass.

err Dave, it’s meant to go on your head!

Map & Compass

I used laminated sections of the 1:25,000 map (printed from Anquet software) with checkpoints and route notes annotated on them and a Silva Ranger compass.

Watch

I wore a Suunto Core watch with altimeter. This is a non GPS watch so there was no way of using it to aid navigation other than by knowing our altitude and time running. I calibrated the altimeter at Edale and also checked it against a known height at Swain’s Head. I knew how long we should run past Swain’s Head before turning south and also at what elevation to exit Far Black Clough.

Suunto Core showing altitude

Emergency Kit

I carried an Adventure Medical Kits / SOL emergency bag as my personal kit and a 4 person group shelter as the team emergency kit. Other members carried a Blizzard Bag and small first aid kit. I also carried 3 spare AAA batteries, some Ibuprofen tablets and a few sheets of toilet roll – none of which were needed thankfully!

Adventure Medical Kits emergency blanket (personal kit)

Food

I took 2 packets of Clif Shot Bloks, (already opened and put into a ziplock bag as they are a pain to open) 3 Clif Shot gels (including one double espresso which I ate just as we got to Kinder to give me a caffeine boost for the last leg) and 2 Ella’s Kitchen baby food sachets (the Mango Baby Brekkie ones taste much nicer than gels and contain over 100 calories per 100g). I also ate 1 slice of malt loaf at Moscar feed station (actually it took me until the heather climb after Cutthroat Bridge to get it down!) and half a ham sandwich at Snake feed station (which was delicious and left me regretting not having picked up the other half all the way to Mill Hill!)

I started with 250ml of electrolyte drink and refilled 500ml at both Moscar and Snake. I also gulped a cup of juice at each feed station and had a few quick sips of tea at Snake.

The pack was definitely the right choice. Four front pockets plus two accessible side pockets meant that I could reach everything that I wanted and stow any kit that I didn’t need in my hands. It didn’t bounce and always felt comfortable. Being able to drink whilst still running without really breaking stride was really beneficial.

Getting the clothing right is always the trickiest thing for me. We were aiming for a fast time so I didn’t want to be faffing around putting layers on and off and thus slowing down. The forecast was for more rain and I expected to feel quite cold on the high, exposed section to Swain’s Head when the pace would be slow. However the clothing you need for that section isn’t what you need for the immediate steep climb up to Hollin’s Cross and inevitably I felt I had too many layer on early on in the race! In hindsight I would have skipped the short sleeved tee shirt and been warm enough with just one base layer. Although it never rained save for a few spots I think wearing a waterproof from the start was ok, however a full zip rather than smock would have been better. This would have allowed me to unzip it fully on the climbs to vent more heat. We encountered lying snow on Derwent Edge and Kinder and my feet were wet for most of the night, however the neoprene socks worked fine and my feet never felt cold. Likewise, my hands were fine, I took the liner gloves off for a time early on and the Goretex mitts were never needed. The X-Claws were definitely a good choice; loads of grip on the sloppy stuff but no discomfort on the flag stones (although hats off to team mate Marcus who coped with the conditions in his Hokas!)

I was a bit disappointed with the Petzl Nao. I had fully charged the (fairly new) battery and programmed the reactive setting to give 8 hours power, however crossing Bleaklow I got the dreaded “flash, flash” warning and a couple of minutes later the Nao dimmed to emergency mode. It had only lasted 6 hours (not bad in itself but still 2 hours short of what the computer software had told me to expect!) Thankfully it was approaching dawn and I also had my second torch. The waist torch definitely helped over the foggy sections as it meant I didn’t need to carry a hand torch so still had hands free for the map and compass.

Of the food I took I ate everything apart from half a packet of Shot Bloks and one gel; I was looking forward to the stew at the end though! I did feel thirsty at some points but not enough to warrant taking a second soft flask.

So nothing major that I’d change, maybe just a few tweaks for next time – but then the weather might be completely different next year.

The Charlie Ramsay Round is a running challenge in the Scottish Highlands, the aim being to cover 56 miles, 24 Munros (mountains over 3000ft) with a total of over 28,500 feet of ascent in under 24 hours.

56 miles, 24 Munros 28,500ft

Standing outside Glen Nevis Youth hostel on a sunny day in late May I was feeling a little nervous. The plan was to tackle the “round” with my mate Ian with only limited support; a couple of people meeting us at Loch Treig (about eight and a half hours into the run) with food and supplies for the next leg, and someone at a remote point by Loch Eilde Mor another 6 hrs later, again with food and enough supplies for us to get to the finish. We would have no support on the hill so would have to navigate ourselves and carry all our own kit. This also meant that we would have to “manage” ourselves i.e. keep an eye on our schedule, make sure we were eating and drinking enough and motivate ourselves when the going got tough.

a flavour of the Ramsay Round scenery on a previous reccy

My main concern wasn’t the physical difficulties of the Ramsay Round but the fact that I’d only managed one reccy of it and had no knowledge of the route through the Grey Corries. This was going to make route finding a bit more difficult and meant that we hadn’t had chance to check out the quickest lines. I was pretty confident that we could navigate the route but we couldn’t afford to spend lots of time studying the map. Choosing a bad line would be costly. Not having run the first section also meant that it was difficult to know what schedule to use as we had no idea how hard it felt.

and they’re off! Leaving Glen Nevis Youth Hostel (photo Masa Sakano)

We set off clockwise just after midday on Monday (our original plan for a weekend attempt had been postponed by bad weather) in warm sunshine. The forecast was for dry weather and equally importantly light winds. After 15 minutes of jog / walking up the Ben Nevis tourist path we passed a group of lads looking hot and tired who asked us “how far to the summit?” Not sure they believed our “a few hours!” reply!

Things went well for the first few hours, the rock was dry, visibility was good and navigation was straightforward. After Aonach Beag we found a good line down “Spinks’ Ridge” named after the line Nicky Spinks took on a previous round. We were slightly behind our schedule but had heard that it wasn’t a big deal to be slow on leg one and not to worry if we were 15 minutes or so down. However towards the end of the leg Ian wasn’t feeling too good and by Loch Treig we were over half an hour down. Helen and Pawel our 2 support crew were sheltering on the dam wall from the un-forecast rain shower (thankfully the midges hadn’t yet emerged) with our supplies and we were soon wolfing down some real food.

pit stop at Loch Treig (photo Pawel Cymbalista)

Ten minutes goes very quickly and no sooner was my chilli con carne scoffed than it was time to go again, picking up fresh drink, food, map and head-torch for the night leg.

We’d had the chat beforehand about splitting up if one of us was struggling and so as we headed up the lower slopes of Stob Choire Sgriodain Ian did his “Captain Oates” impression and urged me to press on. That was definitely the lowest point of the round, leaving my mate who was struggling and heading off into the gathering gloom alone. It was going to be a long night!

I hit Sgriodain on schedule and turned my torch on. The good news was that I was back on schedule for that summit and confident that I could make up lost time, the bad news was that low cloud was covering the summit and navigating to Chno Dearg was going to be tricky. I wasn’t looking forward to the next section, I had reccied it and knew it involved a rough, steep descent off Chno Dearg and an awful, steep climb through heather up on to Beinn na Lap. In daylight I had been able to pick out the lines of least resistance but it would be harder in the dark.

Coming off Beinn na Lap in the dark I was trying to run on a compass bearing but managed to get myself into some thigh deep heather with large boulders that hadn’t been there on my reccy! Thankfully it didn’t last long and I was soon on the good track leading to Loch Treig and I knew I could make up time with some fast running. I’d opted for support at the ruin at the NE end of Loch Eilde Mor which meant crossing the river (Abhainn Rath). I hadn’t reccied this bit but had marked the exact crossing point on the map based on a friend’s attempt. Once I’d successfully negotiated this I could again run quickly on a good track to the support point. I was relishing the thought of a welcome brew when my head torch flashed, warning that the battery was failing! I was still a good 10 minutes away from support, track or no track; “Please don’t fail on me now!”

Masa had cycled in from Mamore Lodge the previous evening and was waiting by the ruin in his tent with hot water and my supplies for the next leg. I struggled with my ration pack bacon and beans but the licorice tea was fantastic! I had made some time up on the previous leg despite being solo in the dark and with a grey hint of dawn in the eastern sky I knew that the worst was behind me. I’d reccied almost all of the next leg through the Mamores and as long as I kept eating and drinking I felt I could continue to make up time.

brew stop at Loch Eilde Mor (photo Masa Sakano)

Refreshed and resupplied and with Masa’s spare head torch I set off on the long haul up Sgurr Eilde Mor. By the summit the torch was off and I’d whacked 9 minutes off my schedule without killing myself. With the night behind me and the sun rising into a cloud free sky I knew that I could do it. It was just going to be a long run, in lovely weather in the glorious Scottish mountains – what was not to like!

The Mamores passed without incident apart from meeting two people! At each summit I looked ahead and identified my next target, then looked at the schedule and said to myself “No way!” The time allocated seemed impossibly short “It will take me loads longer than 35 minutes to get up there!” But it didn’t, I was knocking time off at every Munro. Feeling strong towards the end I was able to push on and when I managed to take 12 minutes off the Stob Ban split I knew that barring disaster I was home and dry.

Equipment I used:

a selection of the equipment & clothing carried

The route is a mix of different terrain: rocky, heather, track, short grass so for footwear I chose Inov-8 Mudclaw 300 which I knew would cope with everything. My feet were sore at the end and I had a couple of bruised toenails but no blisters. The only time I noticed my feet hurting was coming along the hard track and road at the end – you could possibly consider changing into something more cushioned for the last 30 minutes or so.

Running for over 23 hours with a backpack means that it needs to be comfortable! I used the Montane Jaws 10 which was big enough to fit in enough kit for a solo attempt. Mine is the older version with rigid bottles and I carried one bottle which was easy to refill from streams. The front pockets carried my compass, folded map and emergency phone whilst I adapted the pack by using an attachment from another bag to carry my Garmin Etrex GPS.

I wore a short sleeved cycling top with rear pockets to carry my food for the hill and long socks to protect my legs when in long heather (also in case I encountered any snow patches, again to protect my shins). Shorts were Ashmei 2 in 1 Merino (expensive but wonderfully comfortable!)

I chose the Petzl Nao head torch for 2 reasons; its long battery life and its reactive capability which would make map reading more comfortable (it automatically dims and so doesn’t dazzle with reflected light from the map). Unfortunately I made the mistake of selecting high power reactive rather than low power reactive which meant I only got four and a half hours from the battery rather than the anticipated 6 hrs +. Thankfully it got me through leg 2 – just!

I carried OMM Kamleika waterproofs (top & bottom) and had to wear the jacket (smock) when it started raining towards the end of leg 1. I kept this on until dawn, the deep zip allowing me to vent the smock when working hard. I wore thin gloves for the night leg and carried a buff (not worn). I carried an OMM Rotor Smock as an emergency layer as well as a long sleeved base layer (not used). Other emergency kit incluced a SOL emergency bivvy along with a small first aid kit comprising of bandage, plasters, paracetamol and 2 sheets of toilet roll – not needed! – and a mobile phone. I also took 2 spare batteries for my GPS.

I laminated sections of map, annotated with route notes and compass bearings. Having these back to back meant that I needed 5 separate maps for the whole round.

laminated map with route notes

I recorded the run on an old Garmin Etrex hand held GPS (I changed the batteries after 15 hrs) and recorded the split times on both a Garmin 910XT (which lasted about 16 hrs) and a Polar 610 sports watch (non GPS).

Food & Drink

Being unsupported on the hill meant carrying my own food and so was a balance between taking enough and being overloaded. I found on the Paddy Buckley round that I took too much and the same was true this time. Food for the hills was a mix of Nakd bars, Aldi pressed fruit bars, Cliff Shot Bloks, assorted gels and my secret weapon: baby food in the form of Ella’s Kitchen pouches. I used Elivar Endure and Hydrate Plus powder mixed with water that I found on route and from the 2 resupply points. I ate “real food” at the resupply points: Adventure Food chilli con carne with rice and bacon and beans. I was planning to have my favourite Bombay Bad Boy pot noodle in the middle of the night but as I was behind schedule I didn’t want to wait for it to rehydrate (it tasted good at the end though!) I had a bottle of Lucozade at Loch Treig support point and cup of licorice tea at Loch Eilde Mor. Water was plentiful on the route. I started fully hydrated and rather than carrying drink from the start I put powder in my bottle and filled it when I got to the Red Burn.

Navigation

This was by good old fashioned map and compass with pre prepared maps annotated with split times, heights of significant points, important compass bearings etc. I also had most of the summit waypoints loaded onto my GPS so that I could confirm that I was in the correct place if needed. I only used this twice, to check that I had reached Chno Dearg in the dark and clag and to confirm the correct location for the river crossing on the night leg. There was still a bit of snow on the Ben and on a couple of north facing slopes but nothing that caused us to deviate from the planned route.

Schedule

We planned to start soon after midday going clockwise. The thought process behind this is that you’re starting having had a decent night’s sleep and have only been up for 4 hours or so (an evening or early morning start means that you’ve been up for hours already and are starting “tired”). A midday start also meant that we would run the long flat section after Beinn na Lap in the dark. Navigation on this section would be easy and the terrain conducive to fast running, lessening the need to slow down in the dark. Also psychologically dawn is a good morale boost which is more welcome after several hours of running. We were hoping for a 23.30 round looking to start on schedule and pick up time on the last leg. The chart below shows the schedule times and indicates where I was behind (red) and up (blue) on schedule.

schedule with split and actual times

Lessons Learnt

The schedule wasn’t realistic. In hindsight I’d add time to leg 1 and take some off leg 3.
Know thy torch! I chose the Petzl Nao for its long battery life – having it on full power defeats the object!
I took too much kit. I could have done away with the long sleeved top and about a quarter of the food.
It is very unlikely that two people running on the same schedule will be evenly matched; one may be finding it easy whilst the other is struggling so it’s good to have a plan for that situation.

Low Point

Leaving Ian, behind schedule and setting off alone into the night.

High Point

Approaching Binnein Mor around 5am and getting back on schedule. The sun rose into a cloudless sky and a little bird was singing away. I felt then that I was going to do it.

Thanks

A big thank you to Helen Smith and Pawel Cymbalista for supporting us at Loch Treig where they waited in the rain, optimistically arriving early in case we were up on schedule! Also to Masa Sakano for cycling in to Loch Eilde Mor at night with a tent, stove and food for both of us (and for loan of his torch) and for waiting for Ian to arrive and lending him his bike to get back to Kinlochleven. Also thanks to Ian Loombe for his company on leg 1 and for encouraging me to press on when he was struggling.

back where it all began 23 hrs 18 mins later (photo Masa Sakano)

Map used:

Click the logo to see more of what I do:

Some types of trail and fell running only require a modestly bright head torch giving a couple of hours battery life. For more serious ventures you need a torch with a bit more power and one that gives you several hours of battery life on a bright setting. For example an overnight event such as the High Peak Marathon requires runners to spend upward of 8 hours in the dark during which they must navigate across the notoriously difficult Bleaklow, whilst 24 hour rounds such as the Bob Graham require route finding in the high mountains during the hours of darkness. In these situations, having a powerful head torch to see the route and not having to stop to change batteries saves both time and hassle. So is there a head torch that is up to the task? Step forward the new Petzl Nao 575 lumen.

Petzl Nao (2014) 575 lumen head torch

The first version of the Nao got good reviews for its brightness and Reactive Lighting feature but fell short of expectations on battery life. The 2014 model not only has an upgrade in brightness from 315 to 575 lumens it also gives a much better battery life. I tested Petzl’s claim of 8 hours on constant lighting at 120 lumens and the battery lasted 7 hrs 50 mins before the torch flashed a warning and dropped to Reserve Mode (a dim light of about 20 lumens which should last for an hour)

Reactive Lighting – is it a gimmick?When I heard about this my first thoughts were yes. However I then found myself navigating on a night run and being dazzled by the glare from my laminated map and having to manually adjust my torch’s brightness. When I tested the Reactive setting on the Nao I didn’t think it was working – the change in brightness was instant as I looked down to open my bum bag and then looked up again to continue running. I also realised the other benefit of the Reactive Lighting function; improved battery life. As you look at close objects such as the ground immediately in front of you the torch dims, thus saving battery life. Only when you point your head to the distance does the torch illuminate on full power. If you don’t want the feature you can simply twist the switch to turn it on to constant lighting with a choice of two brightness settings (the default settings are 480 lumens or 120 lumens but can be altered using the OS software)

I’ve heard stories that the reactive lighting gets confused in foggy conditions or by your condensing breath in cold, damp conditions. I haven’t really found this to be a problem although the torch was affected by the glare from the reflective trim on someone’s rucksack when I was following them and it kept flaring from bright to dim. I don’t feel this is a major problem because if it annoys you then you can simply switch to constant lighting mode.

Programmable PowerA clever feature of the new Nao is that you can customise the brightness using Petzl’s OS software. You simply plug the torch into a computer with the supplied USB lead and you can change the torch’s settings. For example if you know that you are going to need the torch for five hours you can tweak the settings to allow this. The software allows you to set up different profiles for different activities. To be honest, unless you are going to be in darkness for over 5 hours you probably won’t need this feature. However for an overnight event such as the High Peak Marathon it is really useful to know how long your battery is going to last! Many people won’t use this software but the techie minded may love it!

customising the torch using Petzl’s OS software

How easy is it to use?Some torches can be quite confusing to operate requiring a sequence of press, double press, press and hold etc to select the desired light but not the Nao. One big button needs a single twist to turn on (from the locked off position which prevents accidental turning on) and another twist to change between brightnesses. A long twist changes from constant to reactive mode. One thing I really like is that the big button is easy to find and twist even when wearing bulky gloves. This is a huge advantage that the Nao has over Petzl’s other Reactive torch the RXP which is terribly fiddly to use.

A feature that is missing is a flashing / strobe. It’s probably the least used function on your torch but considering that the Nao is the type of torch that you are most likely to take on remote runs I’m surprised that it is missing.

The Lithium Ion battery pack is easy to disconnect and recharge, it simply plugs in to a USB charger (so can be recharged via 12v socket in a car). A full recharge takes around 5 hours and three green LED’s indicate battery level. These also illuminate briefly when the torch is turned off so you know how much battery is left. In an emergency the battery can be replaced by two AAA’s but this gives reduced brightness and no Reactive Lighting functionality.

recharging the battery (note the green LEDs)

The Nao is comfortable to wear and well balanced. The whole unit weighs 185g with the head and battery units being connected by a simple elastic and cord system. An additional over the head strap is supplied but I didn’t feel the need to use it.

well balanced and comfortable

Performance
I’ve been using the Nao over the winter for both guided running and training. I was particularly impressed when on a trip to an unfamiliar forest I was able to run on wet, technical, narrow trails at full pace; it was leg speed rather than illumination that was the limiting factor! As much as the brightness it is the wide pool of light that the Nao gives off that is impressive. Some torches give a narrow beam but the Nao allows you to use peripheral vision rather than you having to turn your head to see objects at the side.

I chose the Petzl Nao for my Charlie Ramsay Round. I needed a torch with enough power to illuminate the rough steep terrain (especially the descent off Chno Dearg) and yet enough battery power to last through the night with no faffing with battery changes. The reactive function also really came into its own, dimming every time I looked at the map then seamlessly brightening as I looked back at the terrain. I also pre-programmed the torch to give me 5 hours of battery life so I knew that it would last until dawn.

brew stop on the Ramsay round

The power and spread of the Nao’s light is really noticeable when you compare it with other torches. When running in a group one thing you need to consider is that if you run behind someone with a dimmer torch you will put them in their own shadow!

the Nao outshines lesser torches

Is it worth it?Over £100 is a lot to pay for a head torch especially as there are some decent torches around for less than half the price. But having used the Nao and got used to how comfortable and easy to operate it is and how it literally outshines the opposition I’d say it is definitely worth it. For serious winter fell running or for anyone considering night runs where both brightness and long battery life are important factors, the Petzl Nao is a great choice.